Counting device.



No. s5|,92. Patented :une I9, 1900.

G. SCHNEIDER.

CUNTING DEVICE. (Application xea Aug. 21, 1899.) (No Model.)

.MWMHMN mwuuwwnlmm NMMMWMMM .WWW .www www. W

rw's Numa Perzns co.. vuoouwo.. msmmcn'zmA nA c.

NITED STATES PATENT OFFICE.

GEoRG SCHNEIDER, oE scIIwARZBAcII-EISEELD, GERMANY.

couN'rlNc DEVICE.

lS1ECI'.l5`I('1A'lION forming part of Letters Patent No. 651,892, datedJ' une 19, i900. Application ined August 21,1899. seriaiNo. 728,024.(Nomen.)

T0 all whom, it may concern:

Be it known that I, GEORG SCHNEIDER, av subject of the Emperor ofGermany, and a resident of Schwarzbach-Eisfeld, in the Empire ofGermany, have invented certain new and useful Improvements in CountingDevices, of which the following is a specification.

My invention relates to a new and improved counting device particularlyadapted as an aid in learning to add, subtract, dsc., by presentingdirectly to the eye in concrete form a plurality of similarly-formedobjects, thereby eliminating the necessity of a youthful mind trying tocomprehend the results from abstract reasoning. 1

In the accompanying drawings, which form a part of this specification,and in which similar letters refer throughout to similar parts, Figurelis a plan view of my invention. Figs. 2 and 3 are cross-sections.

In constructing my invention, which while simple is yet durable, Iemploy an oblong base A, having secured to its longer sides parallelstrips B, having inwardly-projecting flanges b, as shown plainly in Fig.2. These flanges are preferably beveled and painted some dark colornnharmful to the eyes, serving to bring out in strong contrast thelight-colored objects C. These objects or blocks C are arranged in twoparallel rows having their edges adjacent, while the rear portion ofeach block extends rearwardly beneath the said anges, respectively, theblocks being prevented from slipping out by two elongated guides E,fastened to said base A and lying parallel to the said strip B andentering small grooves formed in the said blocks.` y Secured to theupper surface of each of the said blocks, which, as hereinbeforementioned, are preferably of some light color for sake of contrast, isplaced a small dark button F, which serves to still further aid inattraoting instant attention, while the middle point of each row (herebetween the fifth and sixth) is indicounting.

cated by a dark strip G for the further aid in Fitting in each end ofsaid base and' between said strips is an end piece II, which preventsthe blocks from being slipped out of their proper position. It will beseen from Fig. l that the blocks do not completely fill the space formedby the base and strips; but there is a certain space remaining by meansof which the blocks can be moved backward and forward, indicating thedifferent calculations and constantly presenting to the eye certaincontrasted objects, which greatly aid the youthful mind in determiningthe correct results.

While showing here one form of construction of my invention, I do notlimit myself thereto, but may construct the device in combination withapen-box, &c., or other suitable v`objects which children usually employat school.

Having now described my invention, what I claim as new, and desire toprotect by Letters Patent, is-*e 1. In a new and improved countingdevice particularly adaptable as Aan aid in learning vto add, subtract,&c., the combination of a base-plate, strips thereon, movable blocksbetween 'said strips, guides in said base engaging said blocks, andbuttons on said blocks, substantially as described.

2. In a new and improved counting device particularly adaptable as' anaid in learning to add, subtract, dac., the combination of a base-plate,parallel strips thereon, dark beveled flanges on said strips projectinginwardly,

a'plurality of blocks arranged in rows and eX- tending under saidflanges respectively, parallel guides in said base-plate engaging saidblocks, end pieces on said plate and buttons on said blockssubstantially as described.

GEORG SCHNEIDER.

Witnesses:

ALVIN FLoRscHUTz, FRIEDRICH I-IAAs.

